Iient of scientific anb industrial research



iinrrnio s rntrns WALTER ROSENHAIN AND ERNEST H. RUDD, 0F TEDDINGTON, ENG-LAND, ASSIGNORS TO THEMSELVES, THE IMPERIAL TRUST FOR, THE E1\TCOUIJH,AGE ItIENI OF SCIENTIFEC AND INDUSTRIAL RESEARCH, OLE 'WESTMIIIS'IEB,

ENGLAND, AND RICHARD TETLEY GLAZEBROOK,

BASIC OKYCHL'UJBIID 0F ZIJELCONIUIVI' AND PROCESS 0F M.-l.1HNG

0F IEEIJDXNGTON, ENGLAND.

seine,

mil-mm specification of Letters Patent.

'IPntented June 234i, Militia No Drawing. Original application filed October 13, 1917, Serial No. 1%,471. Divided and this application filed November 14, 1918 serial. No. 5262,5528.

1' 0 1177 whom. it may concern:

Be it known that we, \Vnmnn Rosumrnru and Eimns'r HARRY Rom), both subjects of the King- ()f (il'GHi, Brit-(tin, both residing in 'loddington, Englend, have jointly invented certain 110A and useful Improvements in lroo of which the follinsic ()xychlorid of Zirconium and esses of Making Sonic, lowing; is n specification.

This invention relates to it new basic oxychlorid oi zirconium llttVlDQ, the chemical formula Zr OgCl ZQll U and soluble in Wtti'el.

This compound may be made by first dissolving Wet Zirconium hydroxid in a mix ture of equal volumes of Wkttm and hydrochlori acid of specific gravity 1.15 and concentrating the solution until, on cooling, crystals form abundantly. These are a mixture of the known Zirconium oxychlor'ul. Zrfl tll fil l o, with the new basic oxychlorid, Z1,,O,,Gl .22ll-l The latter may he sepnmted from the former by recrystnllizing the mixture from hydrochloric ncidof specific gravity 1.08.

An aqueous solution of the new basic oXychlorid yields aprecipitate of zirconium on adding sulituic acid.

Having; thus described the nature of the said invention and the best means we know of basic sulfate,

oi"v carrying the sonic into 'iroeticnl effect We claim V i 1. As it new article of n'uinu'tnetnre a basic oxychlorid o'lt zirconium which has the chemical formula 951- 0 UI QQH O, and which dissolves in water, the solution yielding; i1,

precipitate oi bnsic zirconiun'i sulfate on addition of sulfuric acid.

2. A process for producing basic oxychlorid of zirconium oi the chemical formula Z1' (),,(ll ,22i which process consists in dissolving zirconium hydroxid in zrniiXture of hydrochloric acid and water, concentrating the solution until, on cooling", crystals form nhundnntly and re crystallizing the crystals thus formed.

3. A process for producing; basic oxychlo rid of zirconium of the chei'nical formula, Zr O fll fill t), which process'consists in dissolving zirconium hydroxid in nniixture of equnl Volumes oi? Wkttfll and hydrochloric acid of specific gravity L15, eoncent'nting the solution untll, on cooling, crystals form abundantly, and rc-crystnllizing these erystcls from hydrochloric acid of specific grnyity 1,08.

In testimony whereof We have signed our names to this speeificntion. l

listlflllllt ROSENHAIN. lEliZNEST H lit-ODD. 

